8-9. Strata may be composed of hard
materials, such as
8-10. What term describes the capacity of
the material in any stratum to transmit
water under pressure?
8-11. What condition must be present for
groundwater to constitute a water
8-12. Any stratum that bears groundwater is
3. water table
8-13. Water beneath the surface occurs in a
total of how many zones?
Perched water comes about because
water is caught in a zone higher than
the established water table. In what
zone does this occur?
1. Soil moisture zone
2. Saturation zone
3. Percolation zone
4. Aeration zone
What conclusion can be drawn from
the discussion in the textbook on the
quality of water?
All water is impure to start with
Most water must be treated to make
it safe for human consumption
Only industry does not have to treat
Most water is pure to start with
Simply because water is clear may
lead you to make what dangerous
1. It is potable
2. It is impure
3. It is contaminated
4. It is a carrier of disease
What are the two major classes of
impurities in water?
1. Organic and inorganic
2. Odorless and smelly
3. Suspended and free
4. Dissolved and suspended
Algae is an example of what type of